BUSH ANNOUNCES AGRICULTURE SECRETARY JOHANNS' RESIGNATION AT WHITE HOUSE

United States President George W. Bush, right, announces the resignation of United States Secretary of Agriculture Mike Johanns, left, in the Rose Garden at the White House in Washington on September 20, 2007. Johanns is returning to his native Nebraska to run for the United States Senate Seat being vacated by the retirement of United States Senator Chuck Hagel, R-NE. (UPI Photo/Ron Sachs/POOL)